You're not paranoid and silly, just have way much not enough other things to keep you busy. And the exhaust does have flexibility as the manifold heats up and slips around inside the oversize bolt holes. As I said be sure to use all those cast iron spacers per original placement, and don't over-tighten the bolts. And replace everything with GR8. Also, IDK about today but flex pipes on the exhaust was good for fail during inspection. You don't want it under a car for obvious safety reasons.
\'96SS SOB: SSRI, Herter Tune, Tri-Y II, SLP SS, 3000 Edge, F/HO bars, METCO extendeds and CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear)
\'96FWB BUW-Butt Ugly White: SS Bars, METCO LCAs, Koni Reds, PowerTrax No-Slip